18273670516 has 24 divisors (see below), whose sum is σ = 32285118600. Its totient is φ = 9049700352.

The previous prime is 18273670433. The next prime is 18273670523. The reversal of 18273670516 is 61507637281.

It can be written as a sum of positive squares in 4 ways, for example, as 64866916 + 18208803600 = 8054^2 + 134940^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166960 + ... + 253816.

It is an arithmetic number, because the mean of its divisors is an integer number (1345213275).

Almost surely, 2^18273670516 is an apocalyptic number.

It is an amenable number.

18273670516 is a deficient number, since it is larger than the sum of its proper divisors (14011448084).

18273670516 is a wasteful number, since it uses less digits than its factorization.

18273670516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87363 (or 87361 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 18273670516 in words is "eighteen billion, two hundred seventy-three million, six hundred seventy thousand, five hundred sixteen".